IMP34DT05TR Mic Read issue...

[kri_srushty]

Hi,

I am trying to interface the IMP34DT05TR microphone with our custom board. After soldering with custom board, we are unable to read data from the microphone, and the sample data appears incorrect. data look like this when open the audio file in notepad {€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€....etc}

Interestingly, when we connect the microphone externally using wires, it works fine. Kindly help us to resolve this issue.

[Andrew Neil]

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@kri_srushty wrote:

data look like this when open the audio file in notepad

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Notepad is for text files - it won't give any meaningful display of an audio file!

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@kri_srushty wrote:

Interestingly, when we connect the microphone externally using wires, it works fine. Kindly help us to resolve this issue.

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So compare & contrast the two cases - see what's happening differently.

Look at the wires with an oscilloscope in both cases.

[kri_srushty]

@Andrew NeilThanks for your replay,

I have checked in scope and audio buffer[], i am getting only peak value of 2 bytes -- 65535...
Is there any issue with soldering, we tried may time with different mic but no positive results.......